diff --git a/plugins/hypervisors/xen/src/com/cloud/hypervisor/XenServerGuru.java b/plugins/hypervisors/xen/src/com/cloud/hypervisor/XenServerGuru.java
index 620d7113f41..c10f4a0ba16 100644
--- a/plugins/hypervisors/xen/src/com/cloud/hypervisor/XenServerGuru.java
+++ b/plugins/hypervisors/xen/src/com/cloud/hypervisor/XenServerGuru.java
@@ -93,7 +93,11 @@ public class XenServerGuru extends HypervisorGuruBase implements HypervisorGuru
         to.setOs(guestOS.getDisplayName());
         HostVO host = hostDao.findById(vm.getVirtualMachine().getHostId());
         GuestOSHypervisorVO guestOsMapping = _guestOsHypervisorDao.findByOsIdAndHypervisor(guestOS.getId(), getHypervisorType().toString(), host.getHypervisorVersion());
-        to.setPlatformEmulator(guestOsMapping.getGuestOsName());
+        if (guestOsMapping == null) {
+            to.setPlatformEmulator(null);
+        } else {
+            to.setPlatformEmulator(guestOsMapping.getGuestOsName());
+        }
 
         return to;
     }
diff --git a/server/src/com/cloud/hypervisor/KVMGuru.java b/server/src/com/cloud/hypervisor/KVMGuru.java
index 4225232064d..287b0d2f1ee 100644
--- a/server/src/com/cloud/hypervisor/KVMGuru.java
+++ b/server/src/com/cloud/hypervisor/KVMGuru.java
@@ -61,7 +61,11 @@ public class KVMGuru extends HypervisorGuruBase implements HypervisorGuru {
         to.setOs(guestOS.getDisplayName());
         HostVO host = _hostDao.findById(vm.getVirtualMachine().getHostId());
         GuestOSHypervisorVO guestOsMapping = _guestOsHypervisorDao.findByOsIdAndHypervisor(guestOS.getId(), getHypervisorType().toString(), host.getHypervisorVersion());
-        to.setPlatformEmulator(guestOsMapping.getGuestOsName());
+        if (guestOsMapping == null) {
+            to.setPlatformEmulator(null);
+        } else {
+            to.setPlatformEmulator(guestOsMapping.getGuestOsName());
+        }
 
         return to;
     }
diff --git a/setup/db/db/schema-430to440.sql b/setup/db/db/schema-430to440.sql
index 89db04a2e93..7fa93e78d99 100644
--- a/setup/db/db/schema-430to440.sql
+++ b/setup/db/db/schema-430to440.sql
@@ -1674,4 +1674,24 @@ CREATE TABLE `cloud`.`network_acl_item_cidrs` (
 
 ALTER TABLE `cloud`.`load_balancer_healthcheck_policies` ADD COLUMN `display` tinyint(1) NOT NULL DEFAULT '1' COMMENT 'True if the policy can be displayed to the end user';
 ALTER TABLE `cloud`.`load_balancer_stickiness_policies` ADD COLUMN `display` tinyint(1) NOT NULL DEFAULT '1' COMMENT 'True if the policy can be displayed to the end user';
-
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'CentOS 5 (64-bit)', 140, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Red Hat Enterprise Linux 6.0', 136, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Red Hat Enterprise Linux 6.0', 137, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Ubuntu 12.04', 164, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Ubuntu 10.10', 156, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Ubuntu 10.10', 157, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Debian GNU/Linux 5', 72, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Debian GNU/Linux 5', 15, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Debian GNU/Linux 6', 133, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Debian GNU/Linux 6', 132, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Other Linux', 69, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Other Linux', 70, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Windows Server 2008', 54, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Windows 2000', 105, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Windows NT', 64, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Windows 3.1', 65, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Other PV', 160, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'FreeBSD 10', 225, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'FreeBSD 10', 226, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Other PV', 139, now(), 0);
+INSERT IGNORE INTO `cloud`.`guest_os_hypervisor` (uuid,hypervisor_type, hypervisor_version, guest_os_name, guest_os_id, created, is_user_defined) VALUES (UUID(),'KVM', 'default', 'Other PV', 140, now(), 0);